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Ch.4 Geography
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Hydrostatic Equilibrium
vertical pressure gradient force and the force of gravity are normally of nearly equal valueand operate in opposite directions.
Coriolis
an apparent deflection do to the force of the earth spinning.
Geostrophic Flow or Wind
nonaccelerating flow, when the pressure gradient force equals the coriolis force.
Gradient Flow
a continual mismatch between pressure gradient and coriolis forces causing horizontal wind.
Supergeostrophic Flow
when the coriolis force exceeds the pressure gradient force and causes the air to turn
Subgeostrophic
the existence of a weaker coriolis force than the pressure gradient causing the air to turn counterclockwise.
Cyclones
closed low pressure systems
Anticyclones
enclosed areas of high pressure marked by roughly circular isobars
Troughs
elongated areas of low pressure
Ridges
elongated areas or high pressure
Azimuth
the degree of angle from due north moving clockwise
Author
Anonymous
ID
5315
Card Set
Ch.4 Geography
Description
terms for midterm
Updated
2010-01-27T02:49:38Z
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